diff --git a/package-lock.json b/package-lock.json
index 017d0d5..6c8141d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,10 +10,10 @@
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-      "resolved": "https://registry.npmjs.org/arrify/-/arrify-1.0.1.tgz",
-      "integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=",
+    "arg": {
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+      "resolved": "https://registry.npmjs.org/arg/-/arg-4.1.0.tgz",
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@@ -34,29 +34,6 @@
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-    "minimist": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-      "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
-      "dev": true
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-    "mkdirp": {
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-      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
-      "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
-      "dev": true,
-      "requires": {
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-      "dependencies": {
-        "minimist": {
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-          "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
-          "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
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       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
@@ -74,19 +51,16 @@
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-      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-7.0.1.tgz",
-      "integrity": "sha512-BVwVbPJRspzNh2yfslyT1PSbl5uIk03EZlb493RKHN4qej/D06n1cEhjlOJG69oFsE7OT8XjpTUcYf6pKTLMhw==",
+      "version": "8.0.3",
+      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-8.0.3.tgz",
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       "dev": true,
       "requires": {
-        "arrify": "^1.0.0",
-        "buffer-from": "^1.1.0",
+        "arg": "^4.1.0",
         "diff": "^3.1.0",
         "make-error": "^1.1.1",
-        "minimist": "^1.2.0",
-        "mkdirp": "^0.5.1",
         "source-map-support": "^0.5.6",
-        "yn": "^2.0.0"
+        "yn": "^3.0.0"
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     "typescript": {
@@ -96,9 +70,9 @@
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-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/yn/-/yn-2.0.0.tgz",
-      "integrity": "sha1-5a2ryKz0CPY4X8dklWhMiOavaJo=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/yn/-/yn-3.0.0.tgz",
+      "integrity": "sha512-+Wo/p5VRfxUgBUGy2j/6KX2mj9AYJWOHuhMjMcbBFc3y54o9/4buK1ksBvuiK01C3kby8DH9lSmJdSxw+4G/2Q==",
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diff --git a/package.json b/package.json
index a215a84..94b96c8 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
   "homepage": "https://github.com/shekohex/blockchain#readme",
   "devDependencies": {
     "@types/node": "^11.9.0",
-    "ts-node": "^7.0.0",
+    "ts-node": "^8.0.3",
     "typescript": "^2.6.2"
   }
 }